15403245166551 has 48 divisors (see below), whose sum is σ = 23800977334400. Its totient is φ = 8829678559680.

The previous prime is 15403245166549. The next prime is 15403245166559. The reversal of 15403245166551 is 15566154230451.

It is not a de Polignac number, because 15403245166551 - 2¹ = 15403245166549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15403245166551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15403245166559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2465265 + ... + 6073221.

Almost surely, 2^{15403245166551} is an apocalyptic number.

15403245166551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15403245166551 is a deficient number, since it is larger than the sum of its proper divisors (8397732167849).

15403245166551 is a wasteful number, since it uses less digits than its factorization.

15403245166551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608620 (or 3608609 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 15403245166551 in words is "fifteen trillion, four hundred three billion, two hundred forty-five million, one hundred sixty-six thousand, five hundred fifty-one".